Engine-starter system.



, J. H HUNT. ENGINE STARTER SYSTEM.

APPLICATION FILED 'SEPT. 3' $914- I Patented J line 26, 1917.

a The next movement of the main operating member causes the entireplanetary gearing,

UNITED STATES PATENT OFFICE.

JOHN HERMAN HUNT, OF DAYTON, OHIO, ASS IGNOR TO THEJJA'YTON ENGINEERINGLABORATORIES COMPANY, A CORPORATION OF OHIO.

ENGINE-STARTER. SYSTEM.

Specification of Letters Patent.

Patented-June 26,,1917.

Application filed September 3,..1914. Serial No. 859,968.

To all whom it may concern.-

Be it known that I, JOHN IIERMAN HUNT, residing at Dayton, county ofMontgomery, and State of Ohio, have invented certain new and usefulImfprovements in Engine- Starting Systems, 0 which the following is afull, clear, and exact description.

This invention relates to an improvement in electrical systems forinternal combustion or explosion engines, and more particularly tosystems of this type wherein an electric machine is driven as agenerator, or is operable as a motor for starting purposes.

One of the objects of the present invention is to provide a specialplanetary gear ing between the electric machine and thecombustionengine, which is to be brought into u-se when the machine is operatingas a motor for starting purposes, so as to effeet a partial reduction inspeed between the armature shaft and the engine crank shaft, and also tofacilitate the use of a friction or other eflicient drive between thefly- Wheel and an element actuated by the motor.

A further objectof the present invention relates to a means forcontrolling the connection between the electric machine and the engine,both when the machine is operating as a motor and also as a generator.

, More specifically, the controlling means is capable of a plurality ofoperations, preferably arranged in progression. Thus an initial movementof the main operating member will lock or so brake certain of theelements of the planetary gearing that a speed reducing gear isestablished, whereby when the starting device is operating as a .motor,theengin'e will be cranked at a much slower speed than the speed of the"motor.

together with the looking or braking assembly, to "be oscillated so asto bring a pinion or friction member, which forms a part of the gearing,into engagement or contact with the flywheel or any suitable part of theengine. I g

Further objects and advantagesof the present invention *wi'll beapparent ,from the following description, reference, being had to theaccompanyuigfdiawing, wherein one preferred formof the. presentinvention is clearly illustrated type, the one shown in the In thedrawings: Figure l is a fragmentary top plan view; of an automobilechassis, and engine in eluding one form of the present invention. Fig. 2is a detail view of the controlling mechanism included in the presentinvention.

Fig. 3 is an end view gearing;

Fig. 4 is a side view of the structure shown in Fig. 3, witlrtheexterior casing shown. in section for the sake of Clea-mess.-

Referring to the" drawings, the side frames of the chassis are indicatedby the numeral 20. Between these frames and upon cross members 21, theengine 22 is suitably mounted. This engine may be of any preferred-x.

drawing being of the four cylinder, four cycle type, and-is shown forthe purposes of illustration only and is not to be considered in any wayas a limitation of the invention. The starting device 24 comprises anlectric machine which is mounted adjacent to the engine, and so arrangedthat one end of the armature shaft 25 is provided with a so sprocketwheel 26, which is adapted to connected with a sprocket wheel 27, bmeans of a flexible shaft or belt-'28. The sprocket wheel 27 may bemounted directly on an extension of the crank shaft 29,*or 35 on anyother shaft which may be connected with the crank shaft or driventhereby "in any suitable manner. The armature shaft 25 also hasanextension at its other end, as at 30, the extreme end of'whichfoi'r'ris9o of the planetary i one part of the universal coupling, as 111532.

planetary gearing.

ThlS planetary gearing comprises a cars mg 40 and three sets of'pinion's' 3.7, eatih set being mounted upon the casin 40. Each loo'ofthe sets of pinions 37=compri 'onelarge pinion 41 and a small pinion42, the sn'iiill pinion engaging with a. spur gear e l 5,fwhich 1S madefast to. the bra re shaft 46. This brake shaft carries at its extremere'ar-je djaiofi a, casing 47, about which the 'frictionbrake band48'isplaced, and is operated by meansof'the member'49, in sucha manneras to render the pinion 45 stationary, relative to the other"'-p inionsforming the planetary The casing 40 is provided with an ex- .5 roller56, so that any rotation of the casing .40 will effect'a consequentrotation of'the friction driving-element or roller 56. This entireassembly, that is, the shaft33, casing 40, roller 56 and the brake drum47, are so mounted upon the lever 60, that upon movement of thecontrolling element 49, this entire assembly will be shifted into such Iposition as to bring the friction roller into 16' 4 This position willbe maintained until the starting operation has beencompleted.

- However, the controlling element 49 is so arranged that upon aninitial movement thereof, the brake band 48 will first be pulled tightover the drum 47, whereby the shaft 46. and its pinion will be preventedfrom 1 turning.

This arrangement is effected by means of controlling element 49- and oneend of the jbrakeband fastened at its one extremity,

while thejop osite end of the brake band is :fastened'at t e other endof the lever 65, as

tended collar55, which carries the friction Y contact with the flywheelof the engine.

. 'From the above descriptiom'it will be seen ?tha't'the lever 49 has aprogressive action.

That is, the com lete operation of said lever' performs amu tiplicity offunctions, the first one ofwhich is to tighten up the brake .band insuch a manner as to lock the shaft 46,- and the second, operation istocarry the entire gear mechanism into such position that the frictionelement willengage the flywheelfor starting purposes.

as the engine has become self-ac- .tuatin the lever 49 is released andunder the in uence of the spring 68, the assembly" 45 comprising theshaft 33, casing i0, roller 56 and the brake assembly,'will move backinto its normal position. This movement of the i 1 parts mentioned abovewill be stopped by ,means. of the projection 69,'w'hich will efl- 50*age with the shoulder .70, formed on .t e

ever 60. s a

self-actuating, it will immediately start to drive the electric machine24 as a generator I through the sprocket 27, belt 28 and sprocket 26,throu h theshaft 25.

"While have shown-and described one preferred embodiment of the presentinvention, I'reserve the. rightto make. whatever changes or alterationsin the construction and combination of the various elements and ingpurposes.

parts comprising the present invention, and

also the location and arrangement thereof, as may come within the scopeof the appended clai'ms, l 66 -What I claim is as follows.

1. In -astarting device, thecombination with an internal combustion orexplosion. engine; of an electric machine operable asamotor for startingpurposes, a planetary 70v gearing between the one end of the electricmachine and the engine; and means f 'inov ing said-planetary gearinginto and out of 5 driving connection with the engine for start- 2. In astarting device for internal combustion or explosion engines,;thecombination with a ower unit; a planetary gearing between said powerunit and the engine; an operating member for initially renderinsaidplanetary gearin' operable as a spe reductiondevice and nallyconnecting the planetary gearing in operative relation to the engine tobe started. Y

.-'3. In a starting device, the combination the straight arm lever 65,which is ful with an internal combustion or "explosion crumed at thepoint 66; This lever has the ing the planetary gearing through said uni-100,

versaljoi'nt into driving engagement with the engine.

5. In an engine-starting device, the combination with a" starting devicetherefor comprising a dynamo electric machine operable as aj-motor forstarting purposes; a planetary gearing having a' universal ]o1ntconnection with the electric machine'and shiftable into and out.of-driving engagement 7 with the engine; and aTcommon operating membercapable of an initial operation to v render said planetary gearinoperable as a L Of course, as soon as the engine becomes speed reductiondevice, an of a further movement to shift the planetary gearingintooperative driving relation to the engine for starting purposes.

In testimony v vhereof I afiix my signature in the presence of twosubscribing witnesses. JOHN HERMAN HUNT.

AIIIER IED Josnru W. MnDoi z ZLD.

